Hi, I'm a new user from San Tan Valley AZ, US.

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unforgiven7601

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Jan 14, 2025
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San Tan Valley AZ
I need help with drilling a bung hole in a plastic lid. As I am a new brewer I do not want to screw this up. The bung is 1⅜ in diameter. I was thinking of drilling the hole a 1⅛. What do you all think?
 
I've always just drilled a hole for a grommet if this for an airlock. Then a separate hole for a thermowell.

But if you want to use a bung, use a step bit and you can start with a smaller hole and work you way up to the right sized hole.
 
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